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18-letter words containing p, r, e, c, t, s

  • constituency party — a branch of a political party operating within a constituency
  • construction paper — Construction paper is a type of stiff, colored paper that children use for drawing and for making things.
  • constructive proof — (mathematics)   A proof that something exists that provides an example or a method for actually constructing it. For example, for any pair of finite real numbers n < 0 and p > 0, there exists a real number 0 < k < 1 such that f(k) = (1-k)*n + k*p = 0. A constructive proof would proceed by rearranging the above to derive an equation for k: k = 1/(1-n/p) From this and the constraints on n and p, we can show that 0 < k < 1. A few mathematicians actually reject *all* non-constructive arguments as invalid; this means, for instance, that the law of the excluded middle (either P or not-P must hold, whatever P is) has to go; this makes proof by contradiction invalid. See intuitionistic logic. Constructive proofs are popular in theoretical computer science, both because computer scientists are less given to abstraction than mathematicians and because intuitionistic logic turns out to be an appropriate theoretical treatment of the foundations of computer science.
  • continuous process — A continuous process is a process in which the product comes out without interruption and not in groups.
  • conversation piece — something, esp an unusual object, that provokes conversation
  • cordless telephone — a portable battery-powered telephone with a short-range radio link to a fixed base unit
  • cornucopian thesis — the belief that, as long as science and technology continue to advance, growth can continue for ever because these new advances create new resources
  • corpuscular theory — the theory, originally proposed by Newton, and revived with the development of the quantum theory, that light consists of a stream of particles
  • correspondent bank — A correspondent bank is a bank that provides services such as accepting deposits for another bank.
  • costume department — the department in a theatre or television company that is responsible for actors' costumes
  • counter-hypothesis — a proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation (working hypothesis) or accepted as highly probable in the light of established facts.
  • counterproposition — a proposition made in place of or in opposition to a preceding one.
  • cranial osteopathy — osteopathy that focuses on the cranium and the spine
  • creatine phosphate — phosphocreatine.
  • creeping featurism — (jargon)   /kree'ping fee'chr-izm/ (Or "feature creep") A systematic tendency to load more chrome and features onto systems at the expense of whatever elegance they may have possessed when originally designed. "The main problem with BSD Unix has always been creeping featurism." More generally, creeping featurism is the tendency for anything to become more complicated because people keep saying "Gee, it would be even better if it had this feature too". The result is usually a patchwork because it grew one ad-hoc step at a time, rather than being planned. Planning is a lot of work, but it's easy to add just one extra little feature to help someone, and then another, and another, .... When creeping featurism gets out of hand, it's like a cancer. Usually this term is used to describe computer programs, but it could also be said of the federal government, the IRS 1040 form, and new cars. A similar phenomenon sometimes afflicts conscious redesigns; see second-system effect. See also creeping elegance.
  • crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
  • curvature of space — (in relativity) a property of space near massive bodies in which their gravitational field causes light to travel along curved paths.
  • depth-first search — (algorithm)   A graph search algorithm which extends the current path as far as possible before backtracking to the last choice point and trying the next alternative path. Depth-first search may fail to find a solution if it enters a cycle in the graph. This can be avoided if we never extend a path to a node which it already contains. Opposite of breadth first search. See also iterative deepening.
  • descriptive clause — a relative clause that describes or supplements but is not essential in establishing the identity of the antecedent and is usually set off by commas in English. In This year, which has been dry, is bad for crops the clause which has been dry is a nonrestrictive clause.
  • diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
  • diplomatic service — diplomatic corps
  • discharge printing — a fabric-printing method in which the material is dyed and then certain areas are discharged so as to permit the original hue or its color replacement to act as a pattern against the colored ground.
  • duchenne dystrophy — the most common form of muscular dystrophy, usually affecting only boys
  • electron telescope — an astronomical telescope with an attachment for converting the infrared radiation emitted from the surface of planets into a visible image
  • electron transport — the metabolic process in mitochondria or chloroplasts, in which electrons are transferred in stages from energy-rich compounds to molecular oxygen with liberation of energy
  • employment service — (in the United States) a government department established to collect and supply to the unemployed information about job vacancies and to employers information about availability of prospective workers
  • energy consumption — amount of energy used
  • equinoctial spring — either of the two highest spring tides that occur at the equinoxes
  • examination script — a script with answers written on it by an examination candidate taking a written examination
  • excess profits tax — a tax on profits exceeding a certain amount
  • exercise equipment — equipment that can be used for exercising, such as tread mills, rowing machines, etc
  • feeping creaturism — /fee'ping kree"ch*r-izm/ A deliberate spoonerism for creeping featurism, meant to imply that the system or program in question has become a misshapen creature of hacks. This term isn"t really well defined, but it sounds so neat that most hackers have said or heard it. It is probably reinforced by an image of terminals prowling about in the dark making their customary noises.
  • fermat's principle — Optics. the law that the path taken by a ray of light in going from one point to another point will be the path that requires the least time.
  • flat address space — (architecture)   The memory architecture in which any memory location can be selected from a single contiguous block by a single integer offset. Almost all popular processors have a flat address space, but the Intel x86 family has a segmented address space. A flat address space greatly simplifies programming because of the simple correspondence between addresses (pointers) and integers.
  • forced perspective — the use of objects or images that are larger or smaller than they should be, to suggest that they are nearer or further away than they really are
  • frequency spectrum — The frequency spectrum of an electrical signal is the distribution of the amplitudes and phases of each frequency component against frequency.
  • ftp software, inc. — (company)   Developers of the original PC/TCP Packet Driver specification. Address: 26 Princess St. Wakefield, MA 01880-3004. Telephone: +1 (617) 246 0900.
  • gensym corporation — (company)   A company that supplies software and services for intelligent operations management. Common applications include quality management, process optimisation, dynamic scheduling, network management, energy and environmental management, and process modelling and simulation. Their products include G2.
  • geometrical optics — the branch of optics dealing with light as rays, especially in the study of the effects of lenses and mirrors on light beams and of their combination in optical instruments.
  • give sb the creeps — If someone or something gives you the creeps, they make you feel very nervous or frightened.
  • gravity escapement — an escapement, used especially in large outdoor clocks, in which the impulse is given to the pendulum by means of a weight falling through a certain distance.
  • great expectations — a novel (1861) by Charles Dickens.
  • helicopter gunship — military attack helicopter
  • helicopter station — a place where helicopters are kept in readiness for use
  • hemicorporectomies — Plural form of hemicorporectomy.
  • hippocratic facies — the sallow facial expression, with listless staring eyes, often regarded as denoting approaching death
  • historical present — the present tense used in narrating a past event as if happening at the time of narration.
  • hotel receptionist — a person who looks after guests when they first arrive at a hotel, checking them in, giving them their keys, etc
  • hypercholesteremia — Alternative spelling of hypercholesteraemia.
  • hypernationalistic — a person devoted to nationalism.
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